About Us

Tony DiFilippo

Controller

212-818-1200 ext 228

adifilippo@esuus.org

Karl Hart

Senior Manager, Student Services 

212-818-1200 ext 226

khart@esuus.org

Matthew Hudson

Volunteer Services Manager

212-818-1200 ext 245

mhudson@esuus.org

Rossana Ivanova

Development Director

212-818-1200

rivanova@esuus.org

Karen Karpowich

Executive Director 

212-818-1200 ext 222

kkarpowich@esuus.org

Stephan Lubrun

Operations/IT Assistant Manager

212-818-1200 ext 244

slubrun@esuus.org

Kathryn Morrisett

Membership Secretary and Database Manager

212-818-1200 ext 210

kmorrisett@esuus.org

Bao Nguyen

Branches Bookkeeper

212-818-1200 ext 220

bnguyen@esuus.org

Jenny Nguyen

National Bookkeeper

212-818-1200 ext 225

jnguyen@esuus.org

Maria Pyaterneva

Receptionist

212-818-1200 ext 219

mpyaterneva@esuus.org

Alice Uhl

International Scholarship & Debate Programs Director

212-818-1200 ext 212

auhl@esuus.org

Deborah Unger

Executive Assistant 

212-555-1212 ext 237

dunger@esuus.org 

Rona Weitz

Immigrant Programs Director

212-818-1200 ext 239

rweitz@esuus.org

Noel Williamson

Facilites / Porter

212-818-1200